Diffuser



A. L. FAIVER July 5, 1938.

DIFFUSER Filed July 22, 1936 2 Sheets-Sheecl INVENTOR. .A LFA/VER @ATTORNEY A. L. FAIVER July 5, 1938.

. DIFFUSER Filed'July 22, 1956 2 Sheets-Sheet 2 AITORN Patented July 5, 1938 UNITED STATES PATENT GFFICE DIFFUSER poration of California Application July 22,

1 Claim.

This invention relates to diiiusers.

'Ihe general object of the invention is to provide an improved dilfuser by means of which various chemicals can be projected into a space to be f.: treated.

Another object of the invention is to provide a novel nozzle for a diffuser.

An additional object of the invention is to provide a novel blow-off valve for a diiuser.

Another object of the invention is to provide a diiuser including a novel container having novel vessel supporting members therein.

Another object of the invention is to provide a novel mechanism for controlling the amount of 15 chemical discharged by a diffuser.

Other objects and the advantages of the invention will be apparent from the following description taken in connection with the accompanying drawings, wherein:

20 Fig. 1 is a. top plan View of a diifuser embodying the features of my invention;

Fig. 2 is a central, sectional view taken on line 2-2 of Fig. 1;

Fig. 3 is a fragmentary, sectional View taken on 25 line 3-3 of Fig. 2;

Fig. 4 is an enlarged, fragmentary, sectional view showing the discharge nozzle and associated parts;

Fig. 5 is a section taken on line 5-5 of Fig. 4; Fig. 6 is an enlarged, fragmentary side elevation showing the diffuser;

Fig. 7 is a central, sectional view showing the blow-olf member; and

Fig. 8 is a side elevation of the sleeve. Referring to the drawings by reference characters I have shown my invention as embodied in a diiiuser which is indicated generally at I0. As shown the diffuser includes an outer container II which may be made of metal or other suitable 40 material and which may be provided with a side seam I2 and with a bottom I3 secured thereto. The bottom may be provided with bosses I4 upon which the container is supported. The container is shown as provided with a bail I4' and with a 45 closure I5 which has a sliding t with the container so that the closure is removable.

The container II is provided with a plurality of viewing apertures I6 and with a lining I'I which may be made of Cellophane or similar 50 material. Within the container I arrange a xed shelf I8 which includes a lange I9 and supporting ears 20 which may be riveted as at 2I to the container and above the shelf I8 I provide a second shelf 22 which includes a bottom 23 having 55 sides which are pivoted as at 24 so that the shelf 1936, Serial No. 91,862

may swing to a position parallel to the shelf I8.

The shelves I8 and 22 areemployed to support vessels which hold chemicals. The shelf I8 is intended to support a relatively long chemical holding vessel while the shelf 22 when lowered to the dotted line position in Fig. 2 serves to hold a shorter vessel. As shown in the drawings the shelf I8 is employed to hold the chemical holding Vessel 25 which has a threaded cap 25 thereon. 'I'his cap is provided with a central aperture 21. 'Ihe upper end of the vessel 25 projects through an aperture 28 in the closure I5.

Disposed within the container I I I show a steam generating device indicated generally at 29. As shown this device includes a receptacle 30 which may be made of glass and which has a metallic lid 3| mounted thereon. The lid is provided with suitable apertures in which grommets 32 are mounted. These grommets 32 are preferably made of vulcanized liber, or similar insulating material and through the grommets electrodes 33 extend. 'I'he electrodes 33 include terminal portions 34 adapted to be disposed below the normal water level 35 in the receptacle 30.

Mounted on the receptacle I show a discharge tube 36 which includes a lower iiange 31 which serves to hold the tube in place on the lid 3 I. The tube passes through a grommet 38 on the closure I5 and is provided with a circumferentially extending groove 39 which is intersected by apertures 40 which alford communication between the interior of the tube and the groove. Mounted within the tube 36 I provide a blow-off valve member 4I which threadedly engages the interior of the tube and. which includes a lower aperture 42 and a hexagonal valve member 43 which slidably fits in a cylindrical aperture 44. The aperture 44 communicates with an outlet 45.

When the pressure within the container 29 becomes excessive the valve member 43 is moved from its seat to relieve this excessive pressure.

Mounted upon the tube 36 I show a sleeve 46. This sleeve is held in place by a ange 4l on the valve member 4I and the sleeve has an aperture in which a nozzle 48 is mounted. This nozzle 48 communicates With the groove 39 previously mentioned. The construction is such that steam generated in the container 29 passes out through the nozzle 48 and through a discharge member-49 on the end of the nozzle. Mounted within the nozzle I show an injector tube 50 which tube passes through the aperture 2l previously mentioned and extends to a location near the bottom of the chemical holding vessel 25. The injector tube 50 passes through the wall of the nozzle 48 as at 5| Where a leak-tight joint is provided and extends to a. location 52 at the end of the discharge member 49. The length of the downwardly extending portion of the injector tube Will be varied to suit the conditions and when long vessels are employed as shown in Fig. 2 the tube will 'be of the length shown. If shorter vessels are em` ployed then the length of the.; lower portion of the tube A50 will be correspondingly decreased.

'I'he nozzle 48 adjacent to the discharge member 49 is engaged by a plurality of screws 53 shown as three in number which are threaded in apertures in the nozzle and which engage the end of the injector tube. By releasing two of the screws and tightening the third -screw the position of the injector tube 50 relative 'to the outlet of the end 52 may be shifted thus shifting the eccentricity-of the tube 50 with respect 'to the noz- 1 My device is adapted for use with various types of chemicals and may be used for treating various spaces in order to destroy flies, mosquitoes, etc. My device may be employed with solutions containing pyrethrum or other materials as desired.

From the foregoing description it will be apparent that I have invented a novel diuser which canbeeconomically manufactured and which is highly eicient linuse. f f fr l; l"

yI-Iaving thus described my inventionI claim:

In a diffuser, a chemical holding vessel, a steam generating device, said steam generating device including a receptacle, a lid on said receptacle, a discharge tube on` said lid, a sleeve removably `mounted-on said tube, a closure member threaded Within saidtube 'and having a flange thereon engaging said sleeve to normally prevent removal of 'the sleeve, said tube having apertures there the interior of said nozzle,. said nozzle having an outlet, the diameter of said outlet being .greater than -theiexterior diameter of said injector tube.

` AMIELL; salvan. 

